Tighten the pivot screw.
No need to contact BM unless there is still side to side blade play after tightening the pivot screw.
It is an axis lock. Tightening the pivot screw will have no affect on the lock-up, although if you get it too tight, it will obviously (or not so?) affect the flick-ability.
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The most affectionate creature in the world is a wet dog. - Ambrose Bierce
Most dog owners are at length able to teach themselves to obey their dog. - Robert Morley
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